Molding machine



Sept. 8, 1925.

J. J. SOLDAT MOLDING MACHINE Filed Aug. 27, 1923 Patented Sept. 8, 1925.

UNITED STATES JOSEPH 3'. SOLDAT OF CHICAGO, ILLINOIS, ASSIGNO'R TO THE BEARDSLEY 8a PIPER- PATENT OFFICE. A

COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MOLDING MACHINE.

Application filed August 27, 1923. Serial No. 659,539.

To all whom it may concern:

Be it known that I, JOSEPH J. .SOLDAT, a citizen of the United States, and a resident of Chicago, in the county of Cool; and State of Illinois, have invented certaln new and useful Improvements in Molding Machines, of which the following is a full, clear, and exact description.

The invention relates to molding machines. In the operation of molding machines of the type exemplified in Letters Patent No. 1,335,642 and No. 1,408,493, to Beardsley and Piper an endless belt carried by the swinging projector supporting arm is used to deliver sand into the pro ector casing. The primary object of the present invention is to provide an improved construction in which the maximum carrying capacity of the belt is attained, so that a belt of minimum width will sufiice to deliver sand in sufiicient quantity to the pro ector. In machines of this type, it is desirable to avoid excessive weight in the carrying belt, because of the necessity of manually shifting it with the arm in slinging sand into all portions of a flask in making molds.

The invention consists in the several novel features hereinafter-set forth and more particularlydefined by claims at the conclusion hereof.

In the drawings: Fig. 1 is a side elevation of a molding machine embodying the invention. Fig. 2 is a longitudinal section through the projector and its supportlng arm. Fig. 3 is a transverse section on line 33 of Fig. 1. Fig. 4 is a plan.

The invention is exemplified in a machine comprising a column 10; a jib 13 provided with a socket 11 pivoted to swing horizontally over a'flange 12 on the column; and a horizontally movable arm 18 which supports the sand projector and has a spindle 17 at its inner end which is suitably journalled in a socket 14 fixed to the outer end of jib 13. This armcom rises a casing 15 secured by bolts 16 to a ange on the top of spindle 17 and a tube 18 which has its inner end secured in casing 15 and supports the sand projector at its outer end. The projector comprises a head 20, on which is secured a projector blade 21 with a cut-off blade 22 at one side, and a casin 23 which CO-OPOIHtGS with the blade 21 in s inging the sand into a flask beneath the projector. The

projector casing is secured by a yoke 24 to the tube 18'.

An electric motor '26 is bolted to one end of casing 15 and the shaft of said motor extends through said casing and tube 18 and projects beyond the outer end of said tube. The projector-head 20 is journalled on roller-bearings 28 around tube-18 and is fixed to the outer end of shaft 27 by a collar 33 which is keyed. to the shaft and bolted to said head, to cause the projector blade to be driven at'a'high speed. The purpose, in providing an armand a jib to su port the pro ector. is to permit the latter to be moved horizontally to sling sand into all portions of a flask.

The mechanism for feeding sand to the projector comprises an inclined chute 40 which contains a riddle 60 and is supported over jib 13 and an endless belt 41 supported over and movable with the supporting arm 18. Chute 4O delivers the sand into a hopper 42 which is supported by and movable with arm. 18 and guides the sand'onto belt 41. The latter delivers sand through an open side 43 into the projector casing 23. Conveyor 40 is supported so that it can be vibrated by suitable mechanism comprising an electric motor and gearing in a case 48 which is mounted to swin with jib 13.

This mechanism may be of t e construction set forth in Patent No. 1,408,493. The mechanism for drivin belt 41 comprises a bevelled pinion 61 which is keyed to shaft 27 in the casing 15; a bevelled gear 62 meshing with pinion 61 and fixed ,to a transverse shaft 63 which is mounted in a bearing 65 in the casing; a pinion 66 fixed to shaft'63; an idler-gear 67 on a stud shaft 68 and meshin with pinion 66; and a gear 69 fixed to t e hub 0 of a pulley 71 around which thebelt 41 asses and by which it is driven. Pulley 1 is rotatably supported. by a stationary shaft which is su1tably supported by the casing 15. This mechanism may also be of the construction set forth inPatent No. 1,408,493. The outer end of'belt 41 is supported and guided by an idler pulley 87 which is rotatably supported by a shaftv 88 which is secured in bearings 89 on yoke 24.

The belt 41 is operated at a rather high the conveyor.

speed, and in order to increase its carrying capacity by providing means for supporting its marginsbetween its supporting rollers and preventing sand from falling ed the belt laterally, an angle iron bar 50 is provided at each side of the belt. Each bar 50:

has a horizontal flange 51 underlying and supporting one side margin of the belt and a vertical flange52 which prevents the sand.

- of bars 50 terminate at-51 below the connecting portion 53, so'that the belt will pass from its pulley 71 onto the flanges 51 and so that the latter will "support the belt vertically and prevent its sagging between pulleys 71 and 87. The lowermarginsof 110pper 42 lap and are riveted to the vertical flanges of bars 50. A supportingv plate 55 has its lower end suit-ably secured to gearcasing and its upperen'd is riveted to the connecting portion 53. The inner end of the hopper is reinforced by a strip 56 which is riveted thereto and to plate55.- Plate 55 serves as a support for the hopper 42 and the bars 50. The outer ends of bars 50 are supported by a cross-bar 57 which extends hook lugs 58 which are riveted to flanges 50.-

Cross bar 57 is supported by rods 59 which have their lower ends fixed in a supporting clamp 59 which is secured ontube 18. The outer ends of bars 50 terminate adjacent pulley 87 where the bottom flanges 51 are cut away, as at 51',and the projecting vertical flanges-52 are bent inwardly to constrict the stream of sand as it is leaving the belt so that it will pass into the projector'casing. The outer ends of bars 50 are secured in properly spaced relation by a rod 45 which extends through plates 46 which are riveted to the vertical flanges 52 of said bars and are provided with nuts 47 for clamping the plates on said rod.

The invention exemplifies a molding machine of the sand projector type in which an endless belt is used to convey sand to the Egojector and in which the margins of the It are supported to prevent it from sag; ging between the pulleys and in-which the bars are provided with flanges for retaining the sand on the belt. As a result of this construction, a belt of minimum size and weight may be used for delivering the sand 'tothe' projector; the

margins of the belt are supported to prevent it from saggin between its su porting pulleys andjthe verticalfianges of t e angle iron retain the sand on the belt. This construction isof special importance in a machine in which the belt is mounted on a manually operated leterally swinging projector carrying arm,

The" invention is not to be understood as restricted to the details set forth, since these may be modified within the scope of the appended claims without departing from the spirit and scope of the invention.

Having thus describedthe invention, what I claim as newand desire to secure by Letters Patent, is: i

1. In a molding machine, the combination of a sand projector, meansto movably support the projector, and means to deliver sand to the projector comprising an endless belt, pulleys for the belt, and longitudinal bars underlying and supporting the margins of the belt between the pulleys.

2 In a molding machine, the combination of a projector, means to movably support the projector, and means to deliver sand to the projector comprising an endless belt, pulleys for the belt, and longitudinal bars underlying and supporting the margins of the belt between the pulleys and provided with-vertical members to retain the sand on the belt.

3. In a molding machine, the combination of a sand projector, means to deliver sand to the projector comprising an endless belt, and pulleys for the belt, longitudinal bars underlying and supporting the margins of the belt between the pulleys, and a pivoted arm on which the belt, pulleys and bars are supported. i

4. In a molding machine, the combination of a pivoted arm, a sand-projector supported on said arm, mechanism to drive the projector mounted on said arm, an endless belt supported on and movable with said arm for feeding sand to the projector, pulleys for the belt and bars supported on the arm and underlying and supporting the margins of the belt between the pulleys.

a 5. In a molding machine, the combination of a pivoted arm, a sand projector supported on said arm, mechanism to drlve the projector mounted on said arm, an endless beltsupported on and movable with said arm for feeding sand tothe projector, pulleys for the belt and 'barslongitudinally supported on said arm and underlying and sup porting the margins of the belt between the pulleys and provided with members to retain the sand on the belt;

6., In a molding machine, the combination of a movable sand projector, a motor movable with and for driving the projector, an endless belt for feeding sand to the projector, driving means and pulleys for the belt,

and longitudinally extending angle-bars having horizontal flanges underlying and supporting the margins of the belt.

.. In a molding machine the combination of a movable sand pro ector, a motor movable with and for driving the projector, an endless belt for feeding sand to the'projector, driving means and pulleys for the belt, and longitudinally extending angle bars having horizontal flanges underlying and supporting the margins of the belt, and

upstanding vertical flanges to hold the sand on the belt. I I

8. In a molding machine, the Combination of a movable sand projector, a motor movable with and for driving the projector, an endless' belt for feeding sand to the projector,

for feeding sand to the projector, mountedon and movable with said arm and projector, driving means and pulleys for the belt mounted on said arm, and longitudinally extending angle-bars supported on the arm.

and having horizontal flanges underlying and supporting the margins of the belt, and upstanding vertical flanges to hold the sand on the belt.

10. In a molding machine, the combination of an arm, a projector supported on one end of said arm, a motor for driving the projector movable with the arm, an endless belt for feeding sand to the projector, mounted on and movable with said arm and projector, driving means and pulleys for the belt mounted on said arm, longitudinally ex-' tending angle-bars supported on the arm and having horizontal flanges underlying and supporting the margins of the belt, an upstanding vertical flanges to hold the sand on the belt, and a hopper secured to one end of said bars.

11. In v a molding machine, the combination of a projector, means to movably support the projector, and means to deliver sand to. the projector comprising an endless belt, pulleys for the belt, and longitudinally extending bars having flanges underlying and supporting the marginal portions of the belt and vertical flanges for retaining the sand on the belt and having their outer ends shaped .to constrict the stream of sand as itenters the projector.

12. In a molding machine, the combination of a sand projector, a pivoted arm to movably support the projector and means mounted to swing with said arm .to deliver sand to the projector comprising an endless belt,-pulleys for the belt, and longitudinally extending bars having flanges underl ingand supporting the marginal portions 0 the belt and vertical flanges for retaining the sand on the belt, and having their outer ends shaped to constrict the stream of sand as it enters'the projector.

' Signed at Chicago, Illinois, this 31stday' of July, 1923.

JosEPI-I J. SOLDAT. 

